Radiant-Wrapper v0.1a8
Bump version and update Docker image references. Update project version to 0.1a8 in pyproject.toml. Correct Docker image references in README.md and script to remove the `.py` suffix for consistency.
Bump version and update Docker image references. Update project version to 0.1a8 in pyproject.toml. Correct Docker image references in README.md and script to remove the `.py` suffix for consistency.